CMMG AR15 RipStock Compact 5-Position Stock Assembly - Black

The CMMG AR15 RipStock Compact 5-Position Stock Assembly brings serious innovation to your rifle's ergonomics and handling. Unlike traditional friction-lock or lever-based designs, this retractable buttstock uses Fastback Technology—just pull straight back to extend or collapse the stock without fighting binding tabs or complicated mechanics. It's the kind of smooth operation that matters when you need to adjust your cheek weld fast or transition between shooting positions in the field.

Built from aircraft-grade 6061-T6 aluminum with hard anodizing, the RipStock is engineered to be rugged without unnecessary weight. The P3 Technology (Personal Position Preset) feature lets you dial in your preferred length-of-pull using an adjustable indexing screw, so you can set it once and trust it to return to that exact position every time you extend or retract. That consistency pays dividends on hunting trips or long range sessions where muscle memory matters.

The ambidextrous design works equally well for right- and left-handed shooters, and the integrated sling plate keeps your attachment point secure and accessible. Everything you need ships in the box: the RipStock assembly, the adjustable position tube, the P3 indexing screw, spring, buffer, ambidextrous sling plate, and castle nut. If you run a modern AR platform and want a stock that combines adjustability, reliability, and no-nonsense deployment, this is a solid choice for hunting, tactical training, or any application where a shorter overall length and faster transitions matter.

Key Features

• Fastback Technology for smooth, binding-free retraction and extension
• P3 Personal Position Preset—dial in your ideal length-of-pull and lock it in
• Aircraft-grade 6061-T6 aluminum construction with hard anodizing for durability and light weight
• Ambidextrous functionality for left- and right-handed shooters
• Integrated ambidextrous sling plate for quick attachment options
• 5-position adjustability to fine-tune your fit
• Complete assembly kit—everything needed for installation included

Specifications

Frequently Asked Questions

What AR15 models does the CMMG RipStock work with?

The RipStock Compact 5-Position Stock Assembly is designed for AR15 platforms. Verify compatibility with your specific rifle model before purchase.

How does the Fastback Technology work?

Instead of using locking tabs or complex levers, Fastback Technology lets you simply pull the stock straight back to extend or collapse it. The design eliminates binding and delivers smooth, fast adjustments.

Can I set a preferred length-of-pull and have it repeat?

Yes. The P3 (Personal Position Preset) Technology includes an adjustable indexing screw that allows you to set your ideal length-of-pull. Once dialed in, the stock will return to that exact position every time you extend it.

What comes in the box?

The kit includes the RipStock assembly, adjustable position tube, P3 indexing screw, spring, buffer, ambidextrous sling plate, and castle nut—everything needed for a complete installation on your AR15.